DE102009017652B4 - Apparatus for collecting and disposing of leftovers and wet waste - Google Patents

Abstract

Device for collecting and disposing of leftovers and wet waste (6), having a vacuum container (1) vented by a venting device (16) for initially receiving the wet waste (6) and a collecting container (2) opening via a valve (8) - And closable fluid connection (14) is connected downstream of this so that when open fluid connection (14) in the vacuum container (1) first recorded wet waste (6) in the collecting container (2) can be emptied, characterized in that the valve (8) as a force-controlled valve is designed such that it opens as a result of reaching a valve (8) pending hydrostatic pressure of pent-up wet waste (6) in the vented vacuum container (1) the fluid connection (14) and that the valve (8) due to its low held impressed force the fluid connection (14) sealingly closes again only when the wet waste quantity substantially completely from the vacuum container (1) in the collecting container (2) is emptied.

Description

The present invention relates to a device for collecting and disposing of leftovers and wet waste with a deaerated by a venting device vacuum container for initial uptake of wet waste and a sump, which is connected via a valve openable and closable fluid connection this so that when open fluid connection in the Vacuum container only recorded wet waste can be emptied into the sump.

Such a system is, for example, from US 4,748,905 A known. Most of today's wet waste disposal facilities include at least one collection bin into which the food scraps, food waste products and the like wet waste supplied from suitable transfer stations are collected until the next disposal. Also, water, with which the transfer stations and the lines of such systems are cleaned, usually shoots into the sump. If the content in the sump reaches a maximum wet waste level, the sump is emptied and the contents discarded.

For supplying the wet waste from the transfer stations, connected grease traps or similar wet waste sources, a vacuum system is often used, which sucks the supplied wet waste in a vacuum tank, where it is temporarily stored there and then fed to the sump. The vacuum container can be placed under negative pressure so that the wet waste is sucked into the container via suitable wet waste. Upon reaching a maximum fill level in the vacuum vessel, a valve opens between the vacuum vessel and the sump, releasing a fluid connection through which the wet garbage accumulated in the vacuum vessel can enter the sump.

Several solutions are known from the prior art, as the control between filling the vacuum container and emptying into the sump can be made.

Thus, level sensors are sometimes placed in the vacuum tank, which monitor the wet waste level and release the fluid connection to the reservoir when a maximum wet waste level is reached. However, the use of such sensors is very costly and also requires a consistent and costly maintenance of both the sensors and the associated valve, which releases the connection between the vacuum vessel and sump.

Out US 4,748,905 A is a system with vacuum back pressure flap known. The back pressure flap opens by weight pressure of the superimposed liquid, if in addition the vacuum pump and thus the closing holding negative pressure are switched off. Thus, the vacuum pump must first be turned off before the liquid can pass from the vacuum tank into a collecting tank.

The present invention is therefore based on the object to provide a device of the type mentioned above, which allow a more cost-effective design and a low-maintenance operation with at least consistent reliability.

This object is achieved by a device according to claim 1.

In particular, this object is achieved by a device for collecting and disposing of leftovers and wet waste, comprising a vented by a venting device vacuum container for initial uptake of wet waste and a collecting container, which is connected via a valve openable and closable by a fluid connection this downstream so that at opened fluid connection of the first in the vacuum container wet waste is emptied into the reservoir, wherein the valve is designed as a force-controlled valve such that it opens the fluid connection due to reaching the valve pending hydrostatic pressure of pent-up wet waste in the vented vacuum vessel and that the valve due to its low held impressed force effect, the fluid connection closes again sealingly when the wet waste quantity is substantially completely emptied from the vacuum container into the sump.

In the simplest case, the pressure-sensitive valve is a non-return or pivoting flap, which is held in a force-controlled manner by a spring or a counterbalance against the locally pressurized internal pressure of the vacuum container.

The non-return valve opens when a static overpressure is generated by superimposing the wet waste with a defined filling level that outweighs the restoring or closing force of the non-return valve.

An essential point of the present invention is that no control is required for the evacuation process. Also effective for generating the vacuum venting can continue to follow. It has been shown that the valve closes again when the contents of the vacuum container has emptied as far as possible into the collecting container. The effect is obviously based on the fact that the (hydro-) static equilibrium state is released to open the valve and goes into a (hydro-) dynamic process in which the mass forces of the turbulent wet waste, the resulting pendulum vibrations of the valve flap and from the Collecting container in the vacuum tank inflowing air, the process keeps in spite of permanently working vent until the system comes to rest for lack of inflowing wet waste and sealing closes the shutter with the help of impressed restoring force and now again fully effective venting of the vacuum tank.

The effect is comparable to the well-known physical experiment in which a full glass of water is sealed and turned over with a basically loosely laid postcard and the postcard will withstand the water pressure, as long as the masses are at rest and the atmospheric pressure is the undisturbed vacuum plus water pressure. load in the glass outweighs.

Preferably, the restoring force of the closure flap is dimensioned so small that the pivoting flap only closes again when only a small quantity of wet waste counteracts it. The predominant closing force is generated by the negative pressure effect of the venting device.

Preferably, the opening cross-section of the fluid connection is dimensioned so large that the vacuum container in the reservoir overflowing wet waste and the collecting container in the vacuum tank nachströmende air interfere with each other as little as possible and this exchange process is not prematurely come to rest.

Preferably, the vacuum container additionally has a ventilation device for ventilating the same. In this case, a ventilation line is arranged in such a way between the fluid opening and above a maximum level height of the wet waste in the vacuum container, that wet waste and aeration gas are passed from the reservoir separately from each other through the fluid opening and do not interfere with each other.

As soon as the wet waste level in the vacuum tank reaches a maximum fill level H _MAX has reached, opens, as already described, the pressure-sensitive valve. At the same time, it is now possible through the aeration device to additionally increase the reduced internal gas pressure in the vacuum container in order to compensate the pressure reduction in the vacuum container associated with the emptying of the wet waste more quickly or more reliably.

The ventilation device is preferably in operative connection with the pressure-sensitive valve in such a way that the ventilation device is activated when the pressure-sensitive valve is opened. This operative connection can take place both mechanically and electronically, for example by wire or wireless.

Preferably, a locking device is provided which prevents the opening of the force-controlled valve as soon as a maximum wet waste level ( H _MAX ) is reached in the collection container. This prevents the sump is overfilled.

In principle, and in particular in this connection, it is also possible to arrange corresponding pressure sensors, both wet waste pressure sensors and gas pressure sensors, in the vacuum container and in the collecting container in order to control the interaction of the valves of the ventilation and deaeration device.

Preferably, a cleaning device is provided in the region of the valve and / or on the collecting container, which allows a cleaning of the valve and its components, in particular to ensure the sealing completion of the vacuum container. Such a cleaning device may for example consist of a flushing device, which eliminates deposited on the valve wet waste residues. Also, the ventilation device can be used for this purpose.

• 1 Eine Ausführungsform der erfindungsgemäßen Vorrichtung bei geschlossenem drucksensiblen Ventil;
• 2 die Ausführungsform gemäß 1 bei geöffnetem drucksensiblen Ventil und einer Variante der Belüftungsvorrichtung.

In the following the invention will be described with reference to an embodiment which is explained in more detail by the accompanying drawings. Hereby show:

• 1 An embodiment of the device according to the invention with the pressure-sensitive valve closed;
• 2 the embodiment according to 1 with open pressure-sensitive valve and a variant of the ventilation device.

In the following, the same reference numbers are used for identical and equivalent components.

1 shows a schematic representation of an embodiment of the inventive device for collecting and disposing of wet waste. The device consists of a vacuum container 1 , in the over a supply line 3 wet waste 6 from corresponding feeders (not shown) can be supplied. In the supply line 3 is a corresponding feed valve 4 intended.

The vacuum container 1 is via a fluid connection 14 with a collection container 2 connected in such a way that in the vacuum container 1 First-time wet waste 6 in the collection container 2 can be emptied. Both containers are here as a common device container 30 with a common partition wall 32 educated.

To control the discharge process is at the fluid connection 14 a pressure-sensitive valve 8th arranged, which when reaching a certain discharge pressure in the vacuum container 1 opens, thereby the fluid connection 14 releases and emptying the wet garbage 6 in the collection container 2 allowed.

The pressure-sensitive valve 8th is designed such that it has a pivoting flap 18 sealing against a valve seat 20 the fluid connection 14 is applied.

This in 1 illustrated pressure-sensitive valve 8th is designed as a rocker valve, which is a rocker 19 includes, which pivot over a joint 9 is stored. On a first seesaw part 21 is the swing flap 18 arranged while on a second seesaw part 23 a counterweight acting as a force element 11 is positioned such that the pivoting flap 18 in the closed state with a defined force effect on the valve seat 20 is applied.

At the collection container 2 is a venting device 15 provided the collection container 2 with the environment 5 combines.

The ventilation device shown schematically here 15 may be a vent line or just an opening in the sump 2 be. Of course it is also possible, the ventilation device 15 to be provided with additional filtering devices and in particular odor filters.

For emptying the in the collecting container 2 accumulated wet waste 6 is further a disposal device in the form of a disposal line 7 provided, which is the pumping or suction of the wet waste 6 from the collection container 2 allowed.

The vacuum container 1 points next to the feed line 3 and the fluid connection 14 two more devices, in particular the internal gas pressure in the vacuum container 1 can be adjusted.

So is a venting device 16 provided a vent valve 17 includes. About the ventilation device 16 For example, the internal gas pressure may be lowered to be lower than that in the sump 2 prevailing gas pressure.

Now via the supply line 3 wet waste 6 in the vacuum tank 1 introduced, the inner gas pressure difference prevents opening of the pressure-sensitive valve 8th such that the wet waste 6 up to a maximum filling level H _MAX in the vacuum container 1 can accumulate.

The internal gas pressure difference between the containers 1 and 2 is chosen so that as soon as the wet waste 6 the filling level H _MAX has reached the pivoting flap 18 of the pressure-sensitive valve 8th opens. About the now free fluid connection 14 can the wet waste 6 from the vacuum tank 1 in the collection container 2 transgressed.

To empty the contents of the vacuum container 1 in the collection container 2 To accelerate, in essence, at the same time additionally a vent valve 13 a ventilation device 12 be opened so that air or the like gas in the vacuum tank 1 can penetrate and thus allows a lower-pressure equalization.

In this embodiment is in the vacuum container 1 to control the pressure conditions a pressure sensor 10 arranged. About this pressure sensor 10 For example, it is possible to ventilate the ventilation device 12 then stop, if by an abrupt drop in pressure the complete emptying of the wet waste 6 from the vacuum tank 1 is shown. Of course, but this pressure sensor 10 also to control the internal pressures p ₁ respectively. p _L1 during the Erstaufnahmevorgangs, so the filling of the vacuum vessel 1 be used.

It is also possible to have a ventilation device 12 in the form of a vent line within the vacuum vessel 1 between the fluid connection 14 and advantageous to lead to above the maximum level height. This causes a largely unimpeded transfer of wet waste into the sump by the simultaneous venting of the vacuum vessel 1 from the collection container 2 through the opened fluid connection 14 ,

As in 2 is shown, when the discharge pressure in the vacuum vessel 1 the swing flap 18 of the valve 8th from the closed position (see 1 ) pivoted in an open position.

LIST OF REFERENCE NUMBERS

1

vacuum vessel

2

Clippings

3

feed

4

supply valve

5

Surroundings

6

wet waste

7

disposal device

8th

Force-controlled valve

9

joint

10

pressure sensor

11

Force element or counterweight

12

aeration device

13

vent valve

14

fluid communication

15

venting device

16

venting device

17

vent valve

18

swiveling flap

19

seesaw

20

valve seat

21

first seesaw part

23

second seesaw part

30

common device container

32

partition wall

p _U

ambient pressure

p ₁

Total internal pressure

p _L1

Internal gas pressure

p ₂

Total internal pressure

p _L2

Internal gas pressure

Ap

Internal gas pressure difference

H

filling level

H _MAX

maximum filling level

Claims (4)

Device for collecting and disposing of leftovers and wet waste (6), having a vacuum container (1) vented by a venting device (16) for initially receiving the wet waste (6) and a collecting container (2) opening via a valve (8) - And closable fluid connection (14) is connected downstream of this so that when open fluid connection (14) in the vacuum container (1) first recorded wet waste (6) in the collecting container (2) can be emptied, characterized in that the valve (8) as a force-controlled valve is designed such that it opens as a result of reaching a valve (8) pending hydrostatic pressure of pent-up wet waste (6) in the vented vacuum container (1) the fluid connection (14) and that the valve (8) due to its low held impressed force the fluid connection (14) sealingly closes again only when the wet waste quantity substantially completely from the vacuum container (1) i n the collecting container (2) is emptied. Device after Claim 1 , characterized in that in the vacuum container (1) a vent line (12) between the fluid port (14) and above a maximum level height (H _MAX ) of the wet waste (6) is arranged that wet waste (6) and venting gas from the collecting container ( 2) are separated from each other through the fluid opening (14) and do not interfere with each other. Device after Claim 1 or 2 characterized by a locking device which prevents the opening of the pressure-sensitive valve (8) as soon as a maximum wet waste level in the collecting container (2) is reached. Device according to one of the preceding claims, characterized by a cleaning device on the vacuum container (1) and / or on the collecting container (2) for cleaning the pressure-sensitive valve (8) and in particular a valve seat (20) and / or a pivoting flap (18).

Images